My ballscrew / bearing block design.

I spent the past week or so working on a bearing block design for my
conversion. I am documenting my project on http://www.cncwright.com
and I put some screen shots up. I got ballscrews that were only 3/4"
in diameter and have been trying to figure out a way to mount them in
bearings bigger then 15mm ID. I am thinking about shrink-fitting an
adapter on the end of the ballscrew that will also me to make the
diameter bigger. I'm not too sure about shrink fits and would be
interested in any tips, information, or alternate ideas.

Thanks,
M